New member request (Unknown)

A new member (Gerard) has just posted a comment on a post from months ago where it will not be seen requesting assistance in solving the cipher below. I’m reposting the text here and will send him a link to this page. If anyone solves it or has suggestions, please post them in the comments here.

Comment:
Could you help me solve this?

NLLMS CFYSH DDODB SUQFF MSBNA AWQFW ELJWM BGNJF LSUXO SGXPQ GCBVU HEBNZ TFDBZ GOCQR HZJCK BEQVI VEOJA RQLTG ELPHL QFYBM AYUTN GDLGS GFXCR KQQHA FJNXY GCVYI EURFG SCKNN DZGUK DXQZB OBOTY OSFIO BFSHF CFMAY

Unknown 8-17-19

Here’s a randomly generated cipher of unknown type. Two of my ID tests put the correct type in second place, but the third ID test didn’t mention the correct type. A more specific test put the correct type on top. Two of my solvers got it without a crib, but the third solver needed the crib.

???.
UTKFT LBEVS YYVZY NWZAE PUYUE EWCET XVERR OUSTL OMXVO QROVW CUUFY
UBWHS TCBCS ECXVW DEMAM ZGLDE HOKTW UPWUF VSHOE RUSXU ZI

caesar-shifted crib: HFXJBJRZXY

Unknown 8-15-19

Here’s a randomly generated cipher of unknown type. It took me a long time to convince myself I had the correct type even though it was in second place in all my ID tests. It also took a long time to solve it without a crib. I ran my hill-climber many times until it suddenly got a good partial solution that I was able to finish off. I’ll include a caesar-shifted crib.

???
60438 44382 71801 82409 48443 89435 71189 75318 44270 19843 08081
07013 18447 48943 82798 14847 50403 84684 43852 79385 04844 74843
08503 93193 84430 38279 87989 03742 18900 50090 19844 84449 38018
44380 44387 98048 27984 4833

crib: NINANSJI

Fractionated Morse

ioqmbarwyenboijdyhgmilucsnbnfppnzmecjhrubocehhdeeaipetkioqmbrpuxetctnbgpjewnjmenbdeuenlwihmnowiaiucvdhryoqrzwkopmaconpnenlmbuevxxonjyhaozdhkonpcvnnboxpmw

This 2-sentence ciphertext was generated by my random con generator. The text is from gutenberg.org. My program diagnosed it as fractionated Morse and my hill-climber solved it in 1.57 seconds. I’m not going to provide a crib since I think it’s not necessary

Unknown 8-8-19

Here’s a randomly generated cipher of unknown type. All my ID tests put the correct type on top. A hill-climber solved it without a crib but I’ll include a caesar-shifted crib.

???
HGOHW NTTTE FFSBI KKQHQ ATCII ZKVZQ MMQAW ABGRA NKLNE REOXL NWENI
FFQBX DVWDO SPFEA GYRUR ZPPVJ GNRQR VVEUC LOAUM IWYIR MUOOP KLSBL
PSVMK TXZJI BXAAY SBNJR FKI.

crib: YMJGTC

Gromark 8-6-19

Two ciphers today!

Here’s a randomnly generated Gromark cipher. As usual none of my ID tests put Gromark on top. My PH hill-climber solved it without the primer and without a crib. I’ll add primer and crib in caesar-shifted form.

Gromark:
LZJPB ZLFQQ UVTIU OVDBQ MIIDE TULWG ZIBRA QKLGZ GFPPR BJCYM TWVZZ
CYZVS DGZPR HLROJ YRUAE SSQAE NROKE RZAPH RGPSR CODFM HUNBO AHOJG
IXEPN JAPF.

caesar_shifted primer: EJWTXNCYBTYBTKNAJ
caesar-shifted crib: SMTSJXYRFS

Unknown 8-6-19

FMTMT QQFFG EQFUU NUUGL UWFGS NSQQN YPLFE QSWFP ZGPLX QVVCM UDRNZ GBWHS LNVOQ VVCEN HSQSI VGKYF SQGOP XWFPY LOC

This con is a randomly selected sentence from the Internet. My Analyzer placed the correct cipher type in 17th place! My hill-climber solved it without a crib, but I am including a Caesar-shifted crib: HUKOVWL. Correction: The first sentence was too short, so my program selected the beginning of another sentence to lengthen it. The second sentence is truncated in the middle of a word.

Unknown 8-4-19

Here’s a randomly generated cipher of unknown type. Two of my ID tests put the correct type on top and one put it in second place. A hill-climber solved it quickly.

???
ISONG SAUHO NISOP MCNCN MYGOT APOCE GUULS NEODN DBEEE LKBYE NAIKR
VINBO BNLFT TTNLP GSETL GTEST OETNR IEEOI LDSRE MNOTN YFEOM EDYRS
AEREN TACOO RFOKA HEVAT NENHH EETIH HEGAR AVDUK AAENS S.

Key Phrase 7/30/19

TEMOIS HNSM CSPNHSOIIOM SPO SONN NSM SHIN SPO NONSSIHN OCEOS ES SPO SHISS IS SPO WNIS SIIS SIMMOH SIH SPO PIHIOI SPOS SIIIOM CNIS SPO THNII N ONT IS NONO N NEOWO IS ONWIS NSM N SHGEST NNS

This is a random quote from gutenberg.org. The key is also from a random sentence in gutenberg and the final word is truncated. I was able to solve it using computer-assisted word searches by patterns.

Letter frequency patterns

I was toying with some ideas and noticed that it is possible to create a word pattern based on the frequency of the letters. It works by comparing the normal frequency of each letter in the word with the other letters and numbering them in order of most frequent to least, with duplicate letters given sequential numbers, not repeats. For example CHASTENED gets the pattern 974631528. E being the most frequent letter, the first E gets the 1, the second E the 2, then T, and so on. For words longer than 10 letters, using the alphabet instead of numbers would be necessary. It could also be done using repeats, like Myszkowski, so both E’s would get the 1 in the example.

I’ve noticed that for shorter words there are many duplicates, i.e. words with the same pattern, but for longer ones, there are relatively few. For words over seven letters long, many have unique patterns. So far I have not found a use for these patterns in solving, but it seems like there should be one. These patterns could be useful for an Aristocrat in finding a long word if the ciphertext was long enough enough to have reliable frequency data, I suppose, but there are much easier ways of solving those. It seems like the patterns might be used somehow in those types with word breaks like Ragbaby or Sequence.

If anyone has any ideas on how to use these patterns please post your comments. I can provide a sample pattern list for words of length 3 to 9 if you contact me.